The pyknometric density of sodium chloride crystal is `2.165xx10^(3)kg m^(-3)` while its `X` ray density is `2.178xx10^(3)kg m^(-3)` the fraction of unoccupied sites in `NaCl` crystal isA. 5.97B. `5.97xx10^(-2)`C. `5.97xx10^(-1)`D. `5.97xx10^(-3)`

The pyknometric density of sodium chloride crystal is `2.165xx10^(3)kg

1.	The pyknometric density of sodium chloride crystal is `2.165xx10^(3)kg m^(-3)` while its `X` ray density is `2.178xx10^(3)kg m^(-3)` the fraction of unoccupied sites in `NaCl` crystal isA. 5.97B. `5.97xx10^(-2)`C. `5.97xx10^(-1)`D. `5.97xx10^(-3)`
Answer» Correct Answer - D Fraction of unoccupied sites `=("X-ray density-pyknometric denstiy")/("X-ray density")` `=(2.178xx10^3-2.165xx10^3)/(2.178xx10^3)=5.97xx10^(-3)`

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The pyknometric density of sodium chloride crystal is `2.165xx10^(3)kg m^(-3)` while its `X` ray density is `2.178xx10^(3)kg m^(-3)` the fraction of unoccupied sites in `NaCl` crystal isA. 5.97B. `5.97xx10^(-2)`C. `5.97xx10^(-1)`D. `5.97xx10^(-3)`

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